Engine



E. H. PALMER.

ENGINE.

APPLICATION FILED MAR. 19, 1920.

2 SHEETS-SHEET l.

M v INVENTOR If. MM BY M; M WITNESS; ATTORNEY Patented July 19,1921.

E. H. PALMER.

ENGINE.

APPLICATION FILED MAR119, 1920.

1,385,266. Patented July 19, 1921.

2 SHEETS-SHEET 2.

INVENTOR ATTORNEY WITNESS:

ram" OFFICE.

ELIAS HARRY PALMER, 0F CHARLESTON, SOUTH CAROLINA.

ENGINE.

Specification of Letters Patent. P t y 21;

Application filed March 19, 1920. Serial No. 367,278.

To all whom it may concern:

Be it known that I, ELIAS HARRY PALMER, a citizen of the United States, residing at Charleston, in the county of Charleston and State of South Carolina, have invented new and useful Improvements in Engines, of which the following is a specification.

This invention relates to improvements in internal combustion engines of the type described in my Patent N 0. 1,328,685, dated January 20. 1920.

' On of the objectsof the invention is to provide means for compressing the explosive mixture before it is introduced into the firing chamber, such member including a plurality of compartments with means for forcing the mixture from one compartment to the other, so that the gas and air is thoroughly mixed while being compressed.

Another object of the invention is to provide vacuum means for drawing the exploded gases from the firing chamber when the piston has been forced back by the exploslon.

Still another object of the invention is to provide a pair of firing cylinders with their piston rods attached to the same crank shaft, each cylinder being provided with the vari ous mixing chambers and vacuum chamber.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claim. 7

In describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is an end View of an engine constructed in accordance with my invention.

Fig. 2 is a section taken through the cylinders and chambers at one side of the engine.

In these views 1 indicates the body of the engine which is of substantially V-shape and in which is j ournaled the crank shaft 2. The upper part of the body contains the firing cylinders 3 and their attached chambers for supplying the explosive mixture thereto and the vacuum chamber for withdrawing the exploded chargp therefrom. As the parts on one side of t e engine are similar to those on the other only parts on one side will be '6 of the cylinder. A connecting rod 7 connects the piston rod with the crank shaft. 1

A feeding chamber 8 is connected with the upper end of the cylinder by means of the plpe 9 wh1ch is provided with the check valve 10. This cylinder 8 is rovided with a plst'on 11, the piston rod 12 ofwhich is connected wlth a cross head 13 carried by the piston rod 5. A storage tank 14 is connected with the cylinder 8 by means of the pipe 15 and a sl1de valve 16, carried by the cross head 13, controls the communication between said tank and cylinder 8. A compressor 17 is connected with the storage tank by the pipe 18 and with a carbureter 19 by the pipe 20. This compressor has its piston 21 connected with the crank shaft by the piston rod 23.

It will thus be seen that when the crank shaft is started by any suitable form of starting means the downward movement of the plston 21 in the compressor will suck in a charge of gas and air from the carburetor and on its return stroke will force this charge into the storage tank. The. pipe 18 15 provided with a check valve 18' to prevent the return of this mixture to the compressor. From the storage tank the mixture w ll pass to the feeding cylinder 8, when its piston and valve are in the lowest position so that when this iston 11 moves upwardly the mixture will be forced into the firing cylinder through the pipe 9. This mixture will be compressed by both the pistons 4 and-11. The piston 4 is provided with a lip 4 for closing the end of the pipe 9 when said piston reaches the end of its stroke. The charge is then firedin the usual manner by the spark at the plug 24.

The exploded charge is sucked from the firing cylinder by means of the vacuum c'ylinder 25 which is connected with the firing cylinder by the pipe 26. The piston 27 of thls vacuum cylinder is connected with the crank shaft by the piston rod 29. An ex-- haust pipe 30 leads from said vacuum cylinder and the pipes 26 and 30 are controlled by valves 26 and 30. The outlet port 31 leading from the firin 7 cylinder to the pipe 26 is controlled by a s ide valve 32 which is connected with the cross head 13.

The means for cooling the firing cylinder consists of the arrangement of parts described in my former application such parts including the pipe 33 for leading the air from the lower end of the cylinder 3 to the distributor 34 which distributes said air onto said c linder. Air is supplied to the lower end 0 said cylinder by means of a passage 35 formed in the piston rod and conducting the atmospheric air into said cylinder.

As before stated all of these parts are duplicated on the other side of the engine though I only use one carbureter and connect this carbureter with both of the compressors 17 I gear a fly wheel 40 to the crank shaft air-tight chambers -11 and connect said chambers by piping42 to the vacuum chamber 25 so that the air is exhausted from said cham bers and the wheel andgears operate in a partial vacuiun thus eliminating an atmospheric pressure on the wheel and gears so as to enable the engine to deliver maximum power with a minimum expenditure of energy developed by the engine. This arrangement will only require slow speed of the two cycle engine and eliminate to a great extent vibrations produced by high steam in motors of the four-cycle type. The piping 42 is provided with a check valve 43.

Itwill thus be seen that the mixture drawn from the carbureter will pass through the several chambers where it is thoroughly mixed and compressed and is finally delivered to the firing cylinder where it is subjected to great compression by the cylinders 4 and 11. After being ignited and the force of the explosion drives the piston 4 to the and I locate the gears and said fly wheel in lower end of the cylinder the exploding gases are sucked into the vacuum cylinder by means of the piston 27 in said cylinder. On the return strokes of the various pistons a new charge is forced into the firing chamber and the exhaust gases in the vacuum cylinder will be forced out of the discharge pipe. Thus the engine works on the two-cycle principle.

A side valve 36 controls the passage of air from the lower end of the cylinder 3 to the cooling pipe 33 and this valve is connected with the cross head. This valve is so arranged that the air is compressed behind the piston to about one-fourth its volume so that when it is released and strikes the firing end of the cylinder it will thoroughly cool the same.

What I claim is An engine of the class described comprising a cylinder having both ends closed, a piston in said cylinder having its rod passing through the lower end thereof, a crank rod connected with the piston rod, a feeding cylinder connected with said cylinder, :1 storage tank connected with the feeding cylinder, a compressor cyhnder connected with the tank, a carbureter to which the compressor cylinder is connected, pistons in said compressor cylinder and feeding cylinder, means for connecting said pistons with the crank shaft, a vacuum cylinder connected with said first mentioned cylinder, a piston in said vacuum cylinder connected with the crank shaft and valves for controlling the passage of fluid through the cylinders.

In testimony whereof I afiix my signa ture.

ELIAS HARRY PALMER. 

